Answer:
<h2>(x,y)=(6,-2)</h2>
Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>
- linear equation
- system of linear equation
- solving system of linear equation by graphing
- PEMDAS
<h3>given:</h3>
<h3>tips and formulas:</h3>
- to solve system of linear equation by graphing we have to simplify the linear equations to slope-intercept form
- slope intercept form:y=mx+b
<h3>let's solve:</h3>
let's simplify first linear equation to slope -intercept form
x+y=4
y=-x+4
table for this equation
<h3>see the first attachment picture</h3>
let's simplify first linear equation to slope -intercept form
table for this equation
<h3>see the second attached picture</h3>
solutions by graphing the system of linear equation
<h3>see the last attached picture</h3>
note: the red line is for first equation as well as the green line is for second equation and the black dot is the coordinates of the solutions of x and y
Answer:
1.7j - 3.4 = 1.7(j - 2)
Step-by-step explanation:
Note that both 1.7 and -3.4 are evenly divisible by 1.7:
1.7j - 3.4 = 1.7(j - 2)
Answer:
80
Explanation:
The mean of the distribution of sample means always target the population mean. What this line tells is that whatever the population mean will be, the mean of the distribution of sample means will be same. Since the population mean is 80, the mean of distribution of sample means will also be 80.
However, the standard deviation of the sample distributions is different and is equal to the population standard deviation divided by square root of sample size. So in this case the standard deviation of distribution of sample means will be 6 .
72+72+144 and 144 minus 360 equals 216 so half of 216 is 10. so the top and bottom are 108 degrees.